`1.` The house was being decorated when I came.

`-` Chủ ngữ câu chủ động là các đại từ nhân xưng (I, you, we, they, he, she, it) `->` Chuyển sang câu bị động có thể ko thêm (by + O)

`2.` The walls were being painted at 10 yesterday.

`3.` Our conversation was being recorded at that time.

`-` Chủ ngữ câu chủ động là các đại từ bất định `->` Chuyển sang câu bị động có thể ko thêm (by + O)

`4.` Her homework was being done at that time.

`5.` A large hole was being dug in the street by workers.

`6.` Their car was being repaired when I came.

`-` Cấu trúc câu bị động thì QKTD:

`( + )` S + was/were + being + VpII + (by + O) + time.

`( - )` S + wasn't/weren't + being + VpII + (by + O) + time.

`( ? )` Was/Were + S + being + VpII + (by + O) + time? 

Lý thuyết: Bị động thì quá khứ tiếp diễn:

`(+)` S + was/were + being + V3/ed + (O/by O)

`(-)` S + was/were not + being + V3/ed + (O/by O)

`(?)` Was/were + S + being + V3/ed + (O/by O)?

- Trạng ngữ chỉ thời gian đứng sau by O, trạng ngữ chỉ nơi chốn đứng trước by O.

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`1,` The house was being decorated when I came.

`2,` The walls were being painted at 10 yesterday.

`3,` Our conversation was being recorded at that time.

`4,` Her homework was being done at that time.

`5,` A large hole was being digged in the street by workers.

`6,` Their car was being repaired when I came.